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Finding the Fourth Proportional to 178,312.80, 267,348 and 84,828

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Solution

The fourth proportional to 178,312.80, 267,348 and 84,828 is: 127,184.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,312.80 : 267,348 = 84,828 : x
  2. Step 2: Convert to fraction form
    178,312.80/267,348 = 84,828/x
  3. Step 3: Cross multiply
    178,312.80x = 267,348 × 84,828
  4. Step 4: Simplify right side
    178,312.80x = 22,678,596,144
  5. Step 5: Solve for x
    x = 22,678,596,144/178,312.80
  6. Step 6: Final answer
    x = 127,184.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.